Disk space usage tools for Windows

When disk C: is almost out of space and your Windows system gets painfully slow, how do you choose what to delete to free space? Manually checking file and folder sizes is too slow and may not free as much space as needed.

I recommend two simple but powerful tools to find out what’s best to delete/move from your disk when you urgently need more space:

Written by Steffen Gerlach, freely distributable. It’s my favorite because its sunburst chart helps you get right away to that big file (log, installation ,etc.) that you don’t really need in the C: drive.

It’s a little more complex, but has more features than Scanner. It allows to easily relate the graphical representation of disk space usage with the file and folder. Better suited for an in-depth analysis.